How to use ScaledWindow class

Best Swift-snapshot-testing code snippet using ScaledWindow

MacSnapshottestingTests.swift

Source:MacSnapshottestingTests.swift

...60////      let size = NSSize(width: 500, height: 300)61//      view.frame.size = size62//      view.appearance = NSAppearance(named: .aqua)63//64////      let window = ScaledWindow(backingScaleFactor: 1, contentViewController: controller)65////      let display = CGDirectDisplayID()66////      let current = CGDisplayCopyDisplayMode(display)67//68//69//      return Async { callback in70//        let bitmapRep = view.bitmapImageRepForCachingDisplay(in: view.bounds)!71//        view.cacheDisplay(in: view.frame, to: bitmapRep)72//        let image =  NSImage(size: size)73//        image.addRepresentation(bitmapRep)74//        callback(image)75//        let cgImage = image.cgImage(forProposedRect: nil, context: nil, hints: nil)!76//        let genericRGBColorSpace = CGColorSpace(name: CGColorSpace.genericRGBLinear)!77//        let ciImage = CIImage(cgImage: cgImage).matchedFromWorkingSpace(to: genericRGBColorSpace)!78//        let resizeFilter = CIFilter.bicubicScaleTransform()79//        resizeFilter.scale = Float(size.width / ciImage.extent.width)80//        resizeFilter.inputImage = ciImage81//        let ouputImage = resizeFilter.outputImage!82//        let context = CIContext(options: nil)83////          options: [84////            CIContextOption.workingFormat: CIFormat.RGB85////          ]86////        )87//        let newCGImage = context.createCGImage(ouputImage, from: ouputImage.extent)!88//        let genericImage = NSImage(89//          cgImage: newCGImage,90//          size: .init(width: newCGImage.width, height: newCGImage.height)91//        )92//        callback(genericImage)93//      }94//    }95//  }96  public static func windowImage(precision: Float = 1, size: CGSize? = nil) -> Snapshotting {97    return SimplySnapshotting.image(precision: precision).asyncPullback { swiftUIView in98      let controller = NSHostingController(rootView: swiftUIView.preferredColorScheme(.light))99      controller.view.frame.size = controller.sizeThatFits(in: .zero)100      controller.view.appearance = NSAppearance(named: .aqua)101//      let window = ScaledWindow.init(backingScaleFactor: 1, viewToSnapshot: controller.view)102      let window = NSWindow(contentViewController: controller)103      window.backgroundColor = .windowBackgroundColor104      window.colorSpace = .genericRGB105//      window.appearance = .init(named: .aqua)106      let windowController = NSWindowController(window: window)107      return Async { callback in108        windowController.showWindow(self)109        DispatchQueue.main.asyncAfter(deadline: .now().advanced(by: .seconds(1))) {110          guard let image = takeSnapshot(from: windowController) else { return }111          callback(image)112        }113      }114    }115  }...

NSView.swift

Source:NSView.swift

...48          (We wouldnât be able to easily restore the view and all its associated constraints to the original window \49          after moving it to the new window.)50          """51        )52        let scaledWindow = ScaledWindow(53          backingScaleFactor: backingScaleFactor,54          viewToSnapshot: view55        )56        newWindow = scaledWindow57      case .existingWindow:58        precondition(59          view.window != nil,60          "The view must be contained in a window if choosing to draw the view using an existing window."61        )62        newWindow = nil63      }64      let originalAppearance = view.appearance65      if let appearance = appearance {66        view.appearance = appearance67      }68      if let size = size { view.frame.size = size }69      view.layoutSubtreeIfNeeded()70      guard view.frame.width > 0, view.frame.height > 0 else {71        fatalError("View not renderable to image at size \(view.frame.size)")72      }73      return Async { callback in74          let bitmapRep = view.bitmapImageRepForCachingDisplay(in: view.bounds)!75          view.cacheDisplay(in: view.bounds, to: bitmapRep)76          let image = NSImage(size: view.bounds.size)77          image.addRepresentation(bitmapRep)78          callback(image)79//80//          views.forEach { $0.removeFromSuperview() }81//          if newWindow != nil { view.removeFromSuperview() }82//          view.appearance = originalAppearance83//          view.frame = originalFrame84//        }85      }86    }87  }88}89final class ScaledWindow: NSWindow {90  init(backingScaleFactor: CGFloat, viewToSnapshot: NSView) {91    self._backingScaleFactor = backingScaleFactor92    super.init(contentRect: NSRect.zero,93               styleMask: [],94               backing: .buffered,95               defer: true)96    let contentView = NSView()97    contentView.wantsLayer = true98    self.contentView = contentView99    contentView.addSubview(viewToSnapshot)100  }101  private let _backingScaleFactor: CGFloat102  override var backingScaleFactor: CGFloat {103    return _backingScaleFactor...

View.swift

Source:View.swift

...34        func inWindow<T>(_ perform: () -> T) -> T {35            #if os(macOS)36            let superview = superview37            defer { superview?.addSubview(self) }38            let window = ScaledWindow()39            window.contentView = NSView()40            window.contentView?.addSubview(self)41            window.makeKey()42            #endif43            return perform()44        }45        if let scnView = self as? SCNView {46            return Async(value: inWindow { scnView.snapshot() })47        } else if let skView = self as? SKView {48            let cgImage = inWindow { skView.texture(from: skView.scene!)!.cgImage() } // swiftlint:disable:this force_unwrapping49            #if os(macOS)50            let image = Image(cgImage: cgImage, size: skView.bounds.size)51            #elseif os(iOS) || os(tvOS)52            let image = Image(cgImage: cgImage)53            #endif54            return Async(value: image)55        }56        #if os(iOS) || os(macOS)57        if let wkWebView = self as? WKWebView {58            return Async<Image> { callback in59                let work = {60                    inWindow {61                        guard wkWebView.frame.width != 0, wkWebView.frame.height != 0 else {62                            callback(Image())63                            return64                        }65                        wkWebView.takeSnapshot(with: nil) { image, _ in66                            callback(image!) // swiftlint:disable:this force_unwrapping67                        }68                    }69                }70                if wkWebView.isLoading {71                    var subscription: NSKeyValueObservation?72                    subscription = wkWebView.observe(\.isLoading, options: [.initial, .new]) { _, change in73                        subscription?.invalidate()74                        subscription = nil75                        if change.newValue == false {76                            work()77                        }78                    }79                } else {80                    work()81                }82            }83        }84        #endif85        return nil86    }87    #if os(iOS) || os(tvOS)88    func asImage() -> Image {89        let renderer = UIGraphicsImageRenderer(bounds: bounds)90        return renderer.image { rendererContext in91            layer.render(in: rendererContext.cgContext)92        }93    }94    #endif95}96#if os(macOS)97private final class ScaledWindow: NSWindow {98    override var backingScaleFactor: CGFloat {99        2100    }101}102#endif103#endif104extension Array {105    func sequence<A>() -> Async<[A]> where Element == Async<A> {106        guard !isEmpty else { return Async(value: []) }107        return Async<[A]> { callback in108            var result = [A?](repeating: nil, count: self.count)109            result.reserveCapacity(self.count)110            var count = 0111            zip(self.indices, self).forEach { idx, async in...

ScaledWindow

Using AI Code Generation

1import XCTest2import SnapshotTesting3import UIKit4class ScaledWindow: UIWindow {5  override var traitCollection: UITraitCollection {6    return UITraitCollection(traitsFrom: [7      UITraitCollection(displayScale: 2)8  }9}10class MyViewController: UIViewController {11  override func loadView() {12    let view = UIView()13  }14}15class MyViewControllerTests: XCTestCase {16  func testSnapshot() {17    let vc = MyViewController()18    vc.loadViewIfNeeded()19    assertSnapshot(matching: vc, as: .image(on: ScaledWindow()))20  }21}22import XCTest23import SnapshotTesting24import UIKit25class ScaledWindow: UIWindow {26  override var traitCollection: UITraitCollection {27    return UITraitCollection(traitsFrom: [28      UITraitCollection(displayScale: 2)29  }30}31class MyViewController: UIViewController {32  override func loadView() {33    let view = UIView()34  }35}36class MyViewControllerTests: XCTestCase {37  func testSnapshot() {38    let vc = MyViewController()39    vc.loadViewIfNeeded()40    assertSnapshot(matching: vc, as: .image(on: ScaledWindow()))41  }42}43import XCTest44import SnapshotTesting45import UIKit46class ScaledWindow: UIWindow {47  override var traitCollection: UITraitCollection {48    return UITraitCollection(traitsFrom: [49      UITraitCollection(displayScale: 2)50  }51}52class MyViewController: UIViewController {53  override func loadView() {54    let view = UIView()55  }56}57class MyViewControllerTests: XCTestCase {58  func testSnapshot() {59    let vc = MyViewController()60    vc.loadViewIfNeeded()61    assertSnapshot(matching: vc, as: .image(on: ScaledWindow()))62  }63}64import XCTest65import SnapshotTesting66import UIKit

ScaledWindow

Using AI Code Generation

1import ScaledWindow2import XCTest3class ScaledWindowTests: XCTestCase {4    func testScaledWindow() {5        let window = ScaledWindow(frame: CGRect(x: 0, y: 0, width: 100, height: 100))6        let view = UIView(frame: CGRect(x: 0, y: 0, width: 50, height: 50))7        window.addSubview(view)8        assertSnapshot(matching: window, as: .image)9    }10}11import SnapshotTesting12import XCTest13class SnapshotTestingTests: XCTestCase {14    func testSnapshotTesting() {15        let window = UIWindow(frame: CGRect(x: 0, y: 0, width: 100, height: 100))16        let view = UIView(frame: CGRect(x: 0, y: 0, width: 50, height: 50))17        window.addSubview(view)18        assertSnapshot(matching: window, as: .image)19    }20}21import SnapshotTesting22import XCTest23class SnapshotTestingWithStrategyTests: XCTestCase {24    func testSnapshotTesting() {25        let window = UIWindow(frame: CGRect(x: 0, y: 0, width: 100, height: 100))26        let view = UIView(frame: CGRect(x: 0, y: 0, width: 50, height: 50))27        window.addSubview(view)28        assertSnapshot(matching: window, as: .image(on: .iPhoneX))29    }30}31import SnapshotTesting32import XCTest33class SnapshotTestingWithStrategyTests: XCTestCase {34    func testSnapshotTesting() {35        let window = UIWindow(frame: CGRect(x: 0, y: 0, width: 100, height: 100))36        let view = UIView(frame: CGRect(x: 0, y: 0, width: 50, height: 50))

ScaledWindow

Using AI Code Generation

1import ScaledWindow2import XCTest3class SnapshotTest: XCTestCase {4    func testSnapshot() {5        let window = ScaledWindow(frame: CGRect(x: 0, y: 0, width: 375, height: 667))6        let view = UIView(frame: CGRect(x: 0, y: 0, width: 375, height: 667))7        window.addSubview(view)8        window.makeKeyAndVisible()9        assertSnapshot(matching: window, as: .image)10    }11}12import XCTest13import SnapshotTesting14class SnapshotTest: XCTestCase {15    func testSnapshot() {16        let view = UIView(frame: CGRect(x: 0, y: 0, width: 375, height: 667))17        assertSnapshot(matching: view, as: .image)18    }19}20import XCTest21import SnapshotTesting22class SnapshotTest: XCTestCase {23    func testSnapshot() {24        let view = UIView(frame: CGRect(x: 0, y: 0, width: 375, height: 667))25        assertSnapshot(matching: view, as: config)26    }27}

ScaledWindow

Using AI Code Generation

1import XCTest2import SnapshotTesting3class ScaledWindowTests: XCTestCase {4    func testScaledWindow() {5        let view = UIView()6        let window = ScaledWindow(frame: CGRect(x: 0, y: 0, width: 200, height: 200))7        window.rootViewController = UIViewController()8        window.makeKeyAndVisible()9        assertSnapshot(matching: window, as: .image(on: .iPhoneX))10    }11}12import XCTest13import SnapshotTesting14class ScaledWindowTests: XCTestCase {15    func testScaledWindow() {16        let view = UIView()17        let window = ScaledWindow(frame: CGRect(x: 0, y: 0, width: 200, height: 200))18        window.rootViewController = UIViewController()19        window.makeKeyAndVisible()20        assertSnapshot(matching: window, as: .image(on: .iPhoneX))21    }22}23import XCTest24import SnapshotTesting25class ScaledWindowTests: XCTestCase {26    func testScaledWindow() {27        let view = UIView()28        let window = ScaledWindow(frame: CGRect(x: 0, y: 0, width: 200, height: 200))29        window.rootViewController = UIViewController()30        window.makeKeyAndVisible()31        assertSnapshot(matching: window, as: .image(on: .iPhoneX))32    }33}34import XCTest35import SnapshotTesting36class ScaledWindowTests: XCTestCase {37    func testScaledWindow() {38        let view = UIView()39        let window = ScaledWindow(frame: CGRect(x: 0, y: 0, width: 200, height: 200))40        window.rootViewController = UIViewController()41        window.makeKeyAndVisible()42        assertSnapshot(matching: window, as: .image(on: .iPhoneX))43    }44}

ScaledWindow

Using AI Code Generation

1import ScaledWindow2let window = ScaledWindow(width: 300, height: 300, scaleFactor: 2)3let view = UIView(frame: CGRect(x: 0, y: 0, width: 300, height: 300))4window.addSubview(view)5let label = UILabel(frame: CGRect(x: 0, y: 0, width: 300, height: 300))6label.font = UIFont.systemFont(ofSize: 24)7view.addSubview(label)8window.snapshot(named: "1")9import ScaledWindow10let window = ScaledWindow(width: 300, height: 300, scaleFactor: 2)11let view = UIView(frame: CGRect(x: 0, y: 0, width: 300, height: 300))12window.addSubview(view)13let label = UILabel(frame: CGRect(x: 0, y: 0, width: 300, height: 300))14label.font = UIFont.systemFont(ofSize: 24)15view.addSubview(label)16window.snapshot(named: "2")17[MIT](

ScaledWindow

Using AI Code Generation

1import ScaledWindow2import XCTest3import SnapshotTesting4class ScaledWindowTests: XCTestCase {5    func testScaledWindow() {6        let window = ScaledWindow(contentSize: CGSize(width: 100, height: 100), scale: 2)7        let view = UIView(frame: CGRect(x: 0, y: 0, width: 100, height: 100))8        window.addSubview(view)9        assertSnapshot(matching: window, as: .image)10    }11}12import ScaledWindow13import XCTest14import SnapshotTesting15class ScaledWindowTests: XCTestCase {16    func testScaledWindow() {17        let window = ScaledWindow(contentSize: CGSize(width: 100, height: 100), scale: 2)18        let view = UIView(frame: CGRect(x: 0, y: 0, width: 100, height: 100))19        window.addSubview(view)20        assertSnapshot(matching: window, as: .image)21    }22}23import ScaledWindow24import XCTest25import SnapshotTesting26class ScaledWindowTests: XCTestCase {27    func testScaledWindow() {28        let window = ScaledWindow(contentSize: CGSize(width: 100, height: 100), scale: 2)29        let view = UIView(frame: CGRect(x: 0, y: 0, width: 100, height: 100))30        window.addSubview(view)31        assertSnapshot(matching: window, as: .image)32    }33}34import ScaledWindow35import XCTest36import SnapshotTesting37class ScaledWindowTests: XCTestCase {38    func testScaledWindow() {39        let window = ScaledWindow(contentSize: CGSize(width: 100, height: 100), scale: 2)40        let view = UIView(frame: CGRect(x: 0, y: 0, width: 100, height: 100))41        window.addSubview(view)42        assertSnapshot(matching: window, as: .image)43    }44}

ScaledWindow

Using AI Code Generation

1import XCTest2import SwiftUI3import SnapshotTesting4import ViewInspector5class ScaledWindowTests: XCTestCase {6    func testScaledWindow() throws {7        let window = ScaledWindow()8        window.rootViewController = UIHostingController(rootView: ContentView())9        window.makeKeyAndVisible()10        assertSnapshot(matching: window, as: .image())11    }12}13import SwiftUI14struct ContentView: View {15    var body: some View {16        VStack {17            Text("Hello, world!")18                .padding()19            Text("Hello, world!")20                .padding()21            Text("Hello, world!")22                .padding()23        }24    }25}26import UIKit27class ScaledWindow: UIWindow {28    override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {29        super.traitCollectionDidChange(previousTraitCollection)30        if traitCollection.displayScale != previousTraitCollection?.displayScale {31            scaleToFill()32        }33    }34    private func scaleToFill() {35        let scaledSize = CGSize(width: size.width * scale, height: size.height * scale)36        let transform = CGAffineTransform(scaleX: scale, y: scale)37        window?.frame = CGRect(origin: .zero, size: scaledSize)38    }39}40    <string>$(EXECUTABLE_NAME)</string>41    <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>

ScaledWindow

Using AI Code Generation

1import XCTest2import UIKit3import SnapshotTesting4import SwiftUI5import ViewInspector6class TestScaledWindow: XCTestCase {7    let window = ScaledWindow()8    func testScaledWindow() throws {9        let vc = ViewController()10        window.makeKeyAndVisible()11        assertSnapshot(matching: vc, as: .image(on: .iPhoneXr))12    }13}14import UIKit15import SwiftUI16class ViewController: UIViewController {17    override func loadView() {18        let view = UIHostingController(rootView: ContentView())19    }20}21import SwiftUI22import ViewInspector23struct ContentView: View {24    var body: some View {25        Text("Hello, World!")26    }27}28extension ContentView: Inspectable { }29import UIKit30class ScaledWindow: UIWindow {31    override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {32        super.traitCollectionDidChange(previousTraitCollection)33        if let previousTraitCollection = previousTraitCollection, traitCollection.preferredContentSizeCategory != previousTraitCollection.preferredContentSizeCategory {34            NotificationCenter.default.post(name: UIContentSizeCategory.didChangeNotification, object: nil)35        }36    }37}38import XCTest39import UIKit40import SnapshotTesting41class TestScaledWindow: XCTestCase {42    let window = ScaledWindow()43    func testScaledWindow() throws {44        let vc = ViewController()45        window.makeKeyAndVisible()46        assertSnapshot(matching: vc, as: .image(on: .iPhoneXr))47    }48}49import UIKit50import SwiftUI51class ViewController: UIViewController {52    override func loadView() {53        let view = UIHostingController(rootView: ContentView())54    }55}56import SwiftUI57import ViewInspector

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